lunchbox Lockers And Mini Spools - mini Spool - Photo 06

Mini-spools like this one from Yukon are fulltime lockers that don't allow any slip or change in speed between tires. They are by far the most inexpensive way to upgrade to a locker, but are tough on your equipment and recommended more for dedicated off-road vehicles. We recommend using mini-spools for the rear only, as a fulltime locker makes steering extremely difficult over high-traction surfaces.